Hourglass

A time meter allows an estimate of how many units of time there are in a single operation. A thirty minute time scale, every five minutes revealed a ring of sand that allows to know how much time has passed.

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 in  correspondence with the classical shape of the hourglass, giving a different and unexpected perspective. This clock acts as a timer and measures the distance between several points on the timeline.  By means of intervention  and changing the vessels of the hourglass, another function was achieved.

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The choice of   sealing  the clock containers and allow viewing from above, reinforces the appearance of time rings left behind by the sand.